Glad you're getting the performance that your Mirages are capable of. I made numerous system upgrades to get the most out of my previous speakers, Vandersteen 1Cs. I did eventually begin to feel that I had taken them as far as they could go, and ended up upgrading to Ohm Walsh 2000s a couple of years ago. Although I liked the speakers from the get-go, I felt that improvements in electronics, cables and room acoustics were in order. It's all a matter of identifying the bottleneck in your system and addressing it. Of course, once addressed, there is bound to be a different bottleneck elsewhere in the signal chain! But after upgrading my preamp, source gear, room treatments and cabling, my speakers are putting out considerably better sound than when I bought them. As finances allow, I will continue to make improvements, major and minor.